THEFT DETERRENT SYSTEM, Diagnostic DTC:B2764
| DTC Code | DTC Name |
|---|---|
| B2764 | Short to GND in Intrusion Sensor Signal Circuit |
DESCRIPTION
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The intrusion sensor (theft warning ultrasonic sensor) conducts self-diagnosis immediately after power is supplied to the sensor (when the theft deterrent system is set).
If a malfunction is detected in the ISIF line, the main body ECU (multiplex network body ECU) stores this DTC.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2764 | After normal/trouble signal is output from intrusion sensor (theft warning ultrasonic sensor) as result of self-diagnosis, following malfunctions are detected:
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WIRING DIAGRAM
Refer to DTC B2762 Click here.
INSPECTION PROCEDURE
Note
If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.
PROCEDURE
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CHECK HARNESS AND CONNECTOR (INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) (ROOF CONSOLE BOX ASSEMBLY) - BODY GROUND)
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Disconnect the H9 main body ECU (multiplex network body ECU) connector.
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Measure the resistance according to the value(s) in the table below.
Standard Resistance Tester Connection Condition Specified Condition H9-12 (ISIF) - Body ground Always 10 kΩ or higher
NG 
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK 
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REPLACE INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) (ROOF CONSOLE BOX ASSEMBLY)
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Replace the intrusion sensor (theft warning ultrasonic sensor) (roof console box assembly) Click here.
NEXT
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CHECK FOR DTC
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Clear the DTCs Click here.
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Turn the engine switch on (IG), then off.
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Set the theft deterrent system to "ARMED STATE".
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Check that the security indicator changes from illuminated to blinking.
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Set the theft deterrent system to "DISARMED STATE".
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Check for DTCs Click here.
OK DTC B2764 is not output.
NG
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here
OK 
END (INTRUSION SENSOR (THEFT WARNING ULTRASONIC SENSOR) (ROOF CONSOLE BOX ASSEMBLY) WAS DEFECTIVE)
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